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Analyse des performances des frigorigènes à faible PRP dans un nouveau système de pompe à chaleur à éjecteur solaire à détente directe.

Performance analysis of low GWP refrigerants in a novel direct expansion solar assisted ejector heat pump system.

Numéro : 0018

Auteurs : ZOU L., LIU Y., YU J.

Résumé

A novel direct expansion solar assisted ejectorexpansion enhanced heat pump cycle (DX-SEEHP) for heat pump drying applications is proposed. A thermodynamic analysis model of the cycle is established and the performance of DX-SEEHP and conventional ejector expansion heat pump system (EEHP) is comprehensively analysed. Compared to the EHP, the research shows that the DX-SEHP with R134a refrigerant has a 23.64%-39.82% increase in heating performance COPh and 32.79%-33.96% increase in volumetric heating capacity for the given condensing temperature range (Tc from 60 ℃ to 80 ℃ ). Finally, the cycle performance of five low-GWP (GWP<1000) alternative refrigerants (R1234yf, R1234ze(E) and R1233zd(E)) are presented and compared with
R134a. Among them, R1234yf shows excellent thermal performance with the highest COPh 5.40 and high Qcv 4691.11 kJ·m-3, being the best alternative refrigerant to R134a.

Documents disponibles

Format PDF

Pages : 13 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Performance analysis of low GWP refrigerants in a novel direct expansion solar assisted ejector heat pump system.
  • Identifiant de la fiche : 30031027
  • Langues : Anglais
  • Sujet : Technologie, Alternatives aux HFC
  • Source : 3rd IIR conference on HFO Refrigerants and low GWP Blends. Shanghai, China.
  • Date d'édition : 05/04/2023
  • DOI : http://dx.doi.org/10.18462/iir.HFO2023.0018

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